DATASHEET ISL6292 FN9105 Rev.10.00 Li-ion/Li Polymer Battery Charger Nov.3.20 The ISL6292 is an integrated single-cell Li-ion or Li-polymer Features battery charger capable of operating with an input voltage as Complete Charger for Single-Cell Li-ion Batteries low as 2.4V. This charger is designed to work with various types of AC adapters or a USB port. Very Low Thermal Dissipation The ISL6292 operates as a linear charger when the AC Integrated Pass Element and Current Sensor adapter is a voltage source. The battery is charged in a No External Blocking Diode Required CC/CV (constant current/constant voltage) profile. The 1% Voltage Accuracy charge current is programmable with an external resistor up to 2A. The ISL6292 can also work with a current-limited Programmable Current Limit up to 2A adapter to minimize the thermal dissipation, in which case, Programmable End-of-Charge Current the ISL6292 combines the benefits of both a linear charger and a pulse charger. Charge Current Thermal Foldback The ISL6292 features charge current thermal foldback to NTC Thermistor Interface for Battery Temperature Monitor guarantee safe operation when the printed circuit board is Accepts Multiple Types of Adapters or USB BUS Power space limited for thermal dissipation. Additional features Ensured to Operate at 2.65V After Start-Up include preconditioning of an over-discharged battery, an NTC thermistor interface for charging the battery in a safe Ambient Temperature Range: -20C to +70C temperature range, automatic recharge, and thermally Thermally-Enhanced QFN Packages enhanced QFN or DFN packages. Handheld Devices, including Medical Handhelds Related Literature PDAs, Cell Phones and Smart Phones For a full list of related documents, visit our website Portable Instruments, MP3 Players ISL6292 product page Self-Charging Battery Packs Stand-Alone Chargers USB Bus-Powered Chargers Pb-Free Available (RoHS Compliant) FN9105 Rev.10.00 Page 1 of 22 Nov.3.20ISL6292 Overview Typical Applications 5V Wall VIN VBAT Adapter 1F TOEN 1F V2P8 1k C 1k C 1 2 R R Battery 1 2 Pack ISL6292 R T U R D D T 1 2 TEMP FAULT IREF STATUS IMIN EN R R V2P8 IREF IMIN TIME GND 80k 80k 1 F C C 3 TIME 15nF FIGURE 1. TYPICAL APPLICATION CIRCUIT FOR 4X5 OR 5X5 QFN PACKAGE OPTIONS VBA 5V Wall VIN T Adapter 1 F 1F C C 2 1k 1k 1 Battery Battery Pac R R 1 2 Pack ISL6292 k (3X3 DFN) T R D D T 1 2 TEMP FAULT R U STATUS V2P8 EN IREF 1F TIME GND R C IREF 3 80k C TIME 15nF FIGURE 2. TYPICAL APPLICATION CIRCUIT FOR 3X3 DFN PACKAGE OPTION FN9105 Rev.10.00 Page 2 of 22 Nov.3.20